Dual DD512 common chamber question

[bad03ranger 10+ year member]

Building a new box for my two DD512 for my daily 2002 accord 2dr

will be powered by a powerbass 600.4x for now

3.95^3 ft after displacement

how will this box do for SQ and SPL mix more SQ though

thanks for any input

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[y2kbugger 10+ year member]

I'd tune a little lower with a little bit more volume for a more SQ

I think, but i'm still new to this

 

[michaellane 5,000+ posts]

dd for sq tho?

 

[bad03ranger 10+ year member]

dd for sq tho?

true! //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

but im not looking to win any comps with them so this set up would lean more to the SQ side i guess but i know they will still put out very good lows

i have a DDLE12 in my GF tacoma on only 200w from a jensen LSA600 //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif& it does pretty good nowhere near what it can though

i used DD website for port area and box volume but jack at DD said to run a 22" port my ? is: is that 22" per sub or 22" for the whole box

 

[RAM_Designs 5,000+ posts]

Your port length is off. If you're wanting 4ft^4 after displacement with a 35hz tune and that size of ports, then they need to be 31" long.

 

[RAM_Designs 5,000+ posts]

Right now that box is tuned to 40hz.

 

[Canaan 10+ year member]

What vehicle do you have? And how much power do you have to give these DD512's.

 

[bad03ranger 10+ year member]

What vehicle do you have? And how much power do you have to give these DD512's.

2002 Honda Accord 2 door

i have a powerbass ASA 600.4x right now rated at 400rms x 2 @ 4 ohms

 

[Canaan 10+ year member]

This box should get the job done for you. Its 4.25cuft tuned to ~35hz w/ ~14sq per-cuft port area...it will be fine w/ those DD512's.

External measurements are 31.5 x 15 x 24. Port is 4.5w x 13.5t and actual length is 24". Make sure you put a brace between the subs, a 3.5-4" brace will do. Wedges in the back corners will help also.

 

[bad03ranger 10+ year member]

This box should get the job done for you. Its 4.25cuft tuned to ~35hz w/ ~14sq per-cuft port area...it will be fine w/ those DD512's.
External measurements are 31.5 x 15 x 24. Port is 4.5w x 13.5t and actual length is 24". Make sure you put a brace between the subs, a 3.5-4" brace will do. Wedges in the back corners will help also.

that looks good but i want to do a dual port b/c im going to flush mount the subs with a face board to cover all the amps, wiring ect. something like this

but ill cut out the area for the ports or would areos be better for this setup

so should i just do (2) ports 2.25w and 12" long